Agent cannot receive inbound call when on queue – WebRTC SDK

We are developing a call system based on javascript sdk and web rtc sdk. The problem is that when agent is on queue in our system(without opening genesys’s own application), genesys did not allocate the call to the agent(From the analytics panel, it is clear that the agent is on queue at that time but the ACD did not give the call to the agent).

Then the agent opened our system and genesys’s own application at the same time, he can receive call in both systems, which is expected. After that, if he close genesys’s own application, he could start receiving calls in the system.

We are wondering if there is anything we should do with the sdk to avoid the situation. Thanks.